Spill resistant formulations containing clays

Drug – bio-affecting and body treating compositions – Preparations characterized by special physical form

Reexamination Certificate

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

C424S401000, C424S009411, C424S435000

Reexamination Certificate

active

07981435

ABSTRACT:
The invention relates to novel spill resistant formulations comprising either a weak base or a weak acid as the pharmaceutical ingredient, a liquid base, a clay and a water soluble cellulose ether. The clay and cellulose ether allow for a broader pH range into which the pharmaceutically active agent may be dispersed or dissolved, and therefore allows for easier preparation and formulation of the pharmaceutical composition.

REFERENCES:
patent: 4867979 (1989-09-01), Sheth et al.
patent: 5079001 (1992-01-01), Affolter
patent: 5466440 (1995-11-01), Ruddy et al.
patent: 5881926 (1999-03-01), Ross
patent: 6071523 (2000-06-01), Mehta et al.
patent: 6102254 (2000-08-01), Ross
patent: 6224888 (2001-05-01), Vatter et al.
patent: 6355258 (2002-03-01), Mehta
patent: 6399079 (2002-06-01), Mehta
patent: 6509007 (2003-01-01), Rajaiah et al.
patent: 6656482 (2003-12-01), Mehta
patent: 2004/0014823 (2004-01-01), Chaiko
patent: WO 93/08230 (1993-04-01), None
patent: WO 9308230 (1993-04-01), None
Feng, et al., (2003) A novel laponite clay-based Fe nanocomposite and its photo-catalytic activity in photo-assisted degradation of Orange II. Chem. Eng. Sci. 58: 679-685.
Zebrowski, et al., (2003) Shake gels: shear-induced gelation of laponite-PEO mixtures. Colloids and Surfaces A: Physiochem. Eng. Aspects. 213: 189-197.
Rockwood Additives Limited, Laponite, www.rockwoodadditives.com/laponite.htm (accessed Aug. 14, 2003).
International Search Report for PCT/US04/35851.
Written Opinion of the International Searching Authority for PCT/US04/35851.
International Preliminary Report on Patentability for PCT/US04/35851.
“Hydrocolloids,” Science Tech Entrepreneur, Feb. 2007.
Remington, The Science and Practice of Pharmacy, 21st Ed., 2005, p. 345.
Laponite XLG, product bulletin, www.gelwhite.com/tb23.html, accessed Aug. 19, 2003.
Sardinha, H. et al., Gel formation in clay solutions: tuning viscoelasticity with added polymer, www.ecs.umass.edu/hamilton/2001/sardinha—heidi.htm, accessed Aug. 19, 2003.
Zebrowski, Shake Gels, www.deas.harvard.edu/projects/weitzlab/research/laponite.html, accessed Aug. 19, 2003.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Spill resistant formulations containing clays does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Spill resistant formulations containing clays, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Spill resistant formulations containing clays will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-2663535

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.